-Done: add Presentation Tier and set as starting project and add reference (DataEntityTier)-After that i get a problem doing this step:

To add a service reference to the presentation tier
1.
In Solution Explorer, right-click PresentationTier and click Add Service Reference.
2.
In the Add Service Reference dialog box, click Discover.
3.
Select Service1 and click OK

-If i want to add a service reference and press descover i see a service (Design_Time_Address/DataService/Service1/mex) if i select it and click OK i get an popup (WCF Service Host) the status: ERROR and if i click on the service the aditional Information says: System.PlatformNotSupportedException: Operation is not supported on this platform.
at system.Net.HttpListner.ctor()........etc
- after that i close what window there is another popup saying: There was an error downloading metadata from the address please verify that you have entered an valid addess.(address:http://localhost:8732/Design_Time_Address/DataService/Service1/mex)

How do I fix this so I can add a service reference and continue with the presentation tier?